Improvement in goal-sifters



UNrTED' STATES PATENT `l @einena Mw., `BQWADMAN, on BOSTON, MASSACHUSETTS.

IMPROVEMENT IN C'OAL-SIFTERS.l

y 1 Specieation forning part of Letters Patent No. 35,642, dated June 17, 1862.

` To all wwnaz't `may concern.-

B it known than, B. WADMAN, ofnosl ton, in the county of Suffolk andState of Massachusetts, have invented a new and Improved Goahsifter; and I do hereby declare that the Figure 1 represents a vertical central scction ofmy invention.` Fig. 2 is a horizontal section of thesame." x

Sirnilarlettersof reference in indicate corresponding parts. 4 A This invention consists in the arrangement both gurcs i of a rotarycylindrical Sieve fitting, by means y of` a conical centerr over a square projection on the" upper surface of a handle which oscillates on a pivotfprojectng from its lower surface, in combination with a barrel-or cylinder provided atitsbottorn with aiiaring rim and bridge, forniingthesocket for the pivot of the handle in Such alinann'er that the coal and ashes which may` bethrown into the sieve are conducted bytheconical center to the perforated portionof thebottomof said sieve, and

thatby the colnbined action of the oscillating handle andilaring rim the operation of sifting `thecoal is considerably facilitated.-

To enable thoselskilled `in the art to make i and use my invention, I will proceed to de'- i y scribe it with reference to the drawings.

The barrel` or `cylinder A is made of sheetiron, or of wood, or of any other suitable Inaterial, andit is `provided with a cover, B, whichtits nicely in its top. The bottom edge ofthe cylinder is `strengthened by'a rim, C, of

x 'castiron or othersuitable material, and the` rim is secured tothe.` inside of the barrel, as

clearly shown in Fig.1 ofthe drawings. `The lower portionfof` said; rim is flaring down towardthe center of the barrel, so thatthe ashes slide down over it andcollectin the middle.

.Abridge, D,.which extends across the rim' C, and which may becast out of one piece with i the same,-forrns the socket for the pivot c, on

whichthehandle E oscillates; This handle extends througha slot in the side of barrel, so

that it can be conveniently operated, and it is the sake of lightness, may be cut ont and forrned as represented in Fig. 1, and which may, be

castwith the handle and pivot of iron or any other suitable material. The projection b tits into a corresponding socket, c, in the center Y of the sieve F, said socket beingprovided with a Yconical :cap, d, whereby the coal and ashes are thrown on the perforated portion of the bottom` of sieve.

The sieve F is made in the form of a cylinder corresponding to the barrel A, and fitting into the same quite easily, an-d `it is provided with twohandles, e, for the purpose of lifting it out or putting it in, as may be desired. Its bottom is made of a series of rings, f, of wire supported by and fastened to a seriesof radial, bars, g, as clearly shown in Fig. 2 of the drawings; or it may be made in any other desirable rnanner. When the sieve vis placed on the projection c of the handle, its lower edge nearly touches the upper edge of the Haring rim C, so that said rim forms a guide. for the sieve when the same, together with the han dle, is put in motion.

The operation is' as follows: The sieve F is placed into the barrel A and the coal and ashes are thrown in. rlhe cover Bis now put on and an oscillating motion is imparted to the sieve by the handle E. By this motion ,the ashes and small cnders are caused to drop -tion b on4 one, and the pivot a on the other, side of the handle E, in combination with the square socket c in the centerof the sieve F, andwith the bridge D in the bottom of the barrel A, as and for the purpose specified.

2. The conical cap d over the socket in the center of the sieve F, as and :for the purpose described. y l 1W. B. W'ADMAN.

Witnesses: f

B. F. RICE, Wir A. THOMPSON. 

